I've never had the opportunity to actually ride a Brompton. I've only seen them zipping around Chicago during my commute. I see the same two guys on riding an all Green Brompton and a Black/White two tone Brompton during my commute. I would love to try one though.

When comparing my Birdy to my other bikes, I find that it rides a lot like my full sized mountain bike that I converted to road/commuting use. The only major difference is the very quick steering response (obviously due to the smaller wheels). In other words, it rides like a full sized road bike and it handles like a BMX bike.